<html><head><base href="/.">
<title>3D Button Group Card</title>
<style>
body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-color: #f0f2f5;
    font-family: Arial, sans-serif;
}

.card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    min-width: 280px;
    transform: perspective(1000px) rotateX(5deg);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: perspective(1000px) rotateX(0deg);
}

.btn-group-vertical {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn {
    background: linear-gradient(145deg, #2196F3, #1976D2);
    color: white;
    border: none;
    padding: 15px 25px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    position: relative;
    transition: all 0.3s ease;
    
    /* 3D effect */
    box-shadow: 
        0 4px 6px rgba(33, 150, 243, 0.3),
        0 1px 3px rgba(0,0,0,0.12),
        inset 0 1px 1px rgba(255,255,255,0.3);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 8px;
    background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
    pointer-events: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 6px 12px rgba(33, 150, 243, 0.4),
        0 2px 4px rgba(0,0,0,0.12),
        inset 0 1px 1px rgba(255,255,255,0.3);
}

.btn:active {
    transform: translateY(1px);
    box-shadow: 
        0 2px 4px rgba(33, 150, 243, 0.2),
        0 1px 2px rgba(0,0,0,0.12),
        inset 0 1px 1px rgba(255,255,255,0.3);
}

/* Add some subtle animation on page load */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: slideIn 0.5s ease forwards;
}

.btn {
    animation: slideIn 0.5s ease forwards;
}

.btn:nth-child(2) {
    animation-delay: 0.1s;
}

.btn:nth-child(3) {
    animation-delay: 0.2s;
}

.btn:nth-child(4) {
    animation-delay: 0.3s;
}

/* Card title */
.card-title {
    text-align: center;
    color: #333;
    margin-bottom: 20px;
    font-size: 1.5em;
    font-weight: bold;
    text-shadow: 1px 1px 1px rgba(0,0,0,0.1);
}
</style>
</head>
<body>

<div class="card">
    <h2 class="card-title">导航菜单</h2>
    <div class="btn-group-vertical">
        <a href="https://example.com/home" class="btn">首页</a>
        <a href="https://example.com/products" class="btn">产品</a>
        <a href="https://example.com/about" class="btn">关于我们</a>
        <a href="https://example.com/contact" class="btn">联系我们</a>
    </div>
</div>

</body></html>